Antifreezing compound.



CHARLES A. LEWIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO ADAMS & ELTINGCOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ANTIFREEZING COMPOUND.

No Drawing.

To all whom it may concern: I

Be it known that 1, CHARLES A. LEWIS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Antifreezing Compounds,of which the following is a specification.

This invention relates to anti-freezing componds, and more particularlyto those compounds or mixtures adapted to be introduced into theradiator system of internal combustion engines for the purpose ofpreventing freezing thereof in cold weather and consequent rupture ofthe circulating system. It is of course to be understood that while thefreezing compound hereinafter described is particularly adapted for thispurpose, it is not to be understood as being limited to this particularapplication, for the compound is equally applicable to other uses as iswell known to those skilled in the art.

One of the objects of the present invention is to provide ananti-freezing compound particularly adapted for the above use which willbe inexpensive to manufacture. further object is to provide a compoundof the above character which will not clog the pipes through which it iscirculated when the solution becomes supersaturated on evaporation ofthe water. A further object is to provide a compound having a minimumcorrosive action upon the liningsof the circulatingsystem. Other objectswill be in part obvious and in part hereinafter pointed out.

In making the compound I prefer to use as a base calcium chloriddissolved in water, to which glucose, borax and caramel solutions areadded. I have found that the desired proportions are approximately asfollows:

The glucose and caramel solutions are Specification of Letters Patent.

Patented Oct. 22, 1918.

Application filed November 23, 1917. Serial No. 203,525.

added for the purpose of preventing crystallization of the calciumchlorid when the compound becomes super-saturated on evaporation of thewater. It has been found that when calcium chlorid solution has beenheated for a period, some of the water evaporates and in time suchsuper-saturated solution will be formed. When this solution cools thecalcium chlorid is precipitated out in the form of hard crystallinemasses which adhere to the walls of the circulating system, andparticularly in the Water line, thereby more or less clogging the pipesand retarding the flow of the solution therethrough. By the use ofglucose in the solution these crystals do not form in such hard massesand are more readily dissolved by the addition of water. The boraxeliminates to a certain extent the corrosive action that might other-Wisetake place by using calcium chlorid alone, as the hygroscopic salttends to set up a slight corrosive action.

It will be seen from the above that the compound is very inexpensive tomanufactlire and in the proportions above stated will stand atemperature as low as F. below zero without freezing. In climates wheresuch low temperatures are never reached water may be added as desired toraise this freezing temperature. For example, Where the temperaturenever reaches 10 above zero one gallon of the compound above set forthmay be mixed with approximately 2. gallon and a half of water.

It will thus be seen that,the present 1nvention provides asimple andpractical nonfreezing compound adapted to accomplish, among others, allof the objects and advantages herein set forth.

I claim as my invention- 1. A non-freezing compound comprising a chloridcalcium salt mixed with glucose in the presence of water.

2. A non-freezing compound comprisin calcium chlorid dissolved in waterto who a relatively small quantity of glucose 18 added.

3. A non-freezing compound comprising approximately 40 parts of calciumchlorid; 58 parts of water and 2 parts of glucose and borax.

character of the 4:. A non-freezing compound comprising by Weight andapproximately 2% of glucOse, about one part of chlorid calcium saltdisborax, and caramel solution. 10 solved in about one and one halfparts of In testimony whereof I afiix my signature Water to which about2% of glucose is in presence of two Witnesses.

added. CHARLES A. LEWIS.

5. A non-freezing compound consisting of Witnesses:

approximately 58 parts of Water by Weight, LESTER J. MICHAEL,

approximately 40 parts of calcium chlorid ADAM J. JUSTEN.

